The consist was five former Metro North SPV-2000's.
The SPV-2000 was a failed attempt in the late 1970's to replicate the success
of the 1950's RDC, but due to its limited sales, the only examples working
in revenue service could be found in New York, Connecticut and Morocco.
One car was built for the FRA for use as track inspection car T-10 and is
now owned by Caltrain. The cars were sandwiched between AMTK MP15B 574,
three Amtrak gondolas and ...

AMTK former GP40TC rebuilt as GP38H-3 523.

Presumably they are heading for either Wilmington or Bear
DE shops, future unknown.